At least 22 of these 42 European cities have had more hot days this summer than in any year on record.
A hot day means hot for that city: 41.2 °C in Seville, 23.8 °C in Aberdeen. Each is measured against its own thermometer and its own history, never against the others.
RecordNear recordFurther from a recordSize: margin over its own recordDashed: not measured to 12 August
This is 42 thermometers, not a temperature map. Nothing between the marks means anything. Bigger mark, bigger margin over that city's own record.
How far from normal, city by city
Each row is one city's entire record, one mark per summer. Basel's 37 hot days beat all 146 summers it has on file. Tallinn's 2 beat 51 in 100 of its own. A crowded row is just a longer record.
MarseilleIts most hot days on record, by
eight days. For hot nights, 8th of
77.
Valencia6th of
89 for hot days. For hot nights,
2nd of 89.
If one measure could stand in for the other, these two would lean the same way. They lean opposite ways. 24 cities show no night figure at all. They average under two hot nights a year, and dividing by a base that small gives you a big number and no evidence.
How these figures are builtHeat methodologyAEMET, CHMI, Cyprus Department of Meteorology, DWD, FMI, GeoSphere Austria, KNMI, Met Office, Meteo-France, MeteoSwiss, Riigi Ilmateenistus / Keskkonnaagentuur, SMHIto 31 July, 7, 8, 9, 10 and 12 August 2026Hot days, above each station's own 95th percentile of July-August maxima, 1971 to 2000, and 1991 to 2020 for Larnaca, Lyon, Murcia, Palma, Tallinn42 stationsCoastlines, Natural Earth 50m via world-atlas@2.0.2, objects.land, merged land so no country borders are drawnpublic domain